Digital guide
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B&R 5AC901.LSDL-00
Structural Features:
The drive uses a book-style compact housing (106 × 115 × 62 mm) with screw-terminal power connections and M12 connector for encoder and I/O. The IGBT power stage operates at 16 kHz PWM switching frequency, delivering sinusoidal motor current with < 5% THD. The integrated brake chopper handles regenerative energy up to 100% of rated power without external braking resistor (for applications within rated current).
Detailed content
Core Technical Specifications:
| Parameter | Value |
|---|---|
| Rated Output Current (Continuous) | 12 A |
| Peak Output Current (5 s) | 36 A |
| DC Bus Voltage Range | 48 V DC to 610 V DC |
| Rated Power at 48 V DC | ~1.4 kW |
| Rated Power at 310 V DC | ~5.0 kW |
| Rated Power at 540 V DC | ~8.0 kW |
| Control Modes | Torque, Velocity, Position, Electronic Cam, Electronic Gear, Path Planning |
| Servo Cycle Time | 62.5 µs (16 kHz) |
| Position Control Resolution | 24-bit (16,777,216 counts/rev with 2048-line encoder) |
| Encoder Inputs Supported | Hiperface DSL, EnDat 2.2, SSI, BiSS-C (multi-turn absolute) |
| Fieldbus Interfaces | SERCOS III, EtherCAT, PROFINET IRT, POWERLINK, EtherNet/IP |
| Safety Functions (per IEC 61800-5-2) | STO, SS1, SLS, SLP, SOS — SIL 3 / PLe certified |
| Digital Inputs | 8× (24 V DC, PNP/NPN configurable, 500 kHz) |
| Digital Outputs | 4× (24 V DC, PNP, 500 kHz) |
| Analog Inputs | 2× (0–10 V, 16-bit, differential) |
| Analog Outputs | 1× (0–10 V, 16-bit) |
| Protection Class | IP20 (standard), IP65 (with cover plate) |
| Control Supply Voltage | 24 V DC (nominal), range: 19.2 V DC to 28.8 V DC |
| Ambient Operating Temperature | 0°C to +55°C (derating above 40°C: −2.5%/°C) |
| Dimensions (W × H × D) | 106 mm × 115 mm × 62 mm |
| Net Weight | ~0.85 kg |
| Certifications | CE, UL 508, cULus, ATEX, SIL 3 (IEC 61508), PLe (ISO 13849-1) |
Functional Highlights:
The integrated safety functions (SIL 3 / PLe) eliminate the need for external safety relays or safety PLCs, reducing cabinet space and wiring complexity. Universal encoder support (Hiperface, EnDat 2.2, SSI, BiSS-C) allows mixing motor brands on the same fieldbus. Electronic cam and gear functions are executed internally at servo cycle speed, offloading the master controller. The path planning function enables point-to-point motion with trajectory smoothing, jerk limitation, and via-point passing — all without host PLC intervention.
Working Principle:
The master controller sends setpoints (position/velocity/torque) via real-time Ethernet fieldbus (SERCOS III, EtherCAT, etc.) at 1 ms cycle time. The drive’s digital signal processor (DSP) executes three nested control loops — current loop (16 kHz), velocity loop (4 kHz), position loop (1 kHz) — using field-oriented control (FOC). The IGBT inverter stage synthesizes three-phase sinusoidal current for the motor. Encoder feedback provides real-time rotor position for closed-loop operation.
Applicable Industries:
Single-axis servo applications: pick-and-place robots, CNC axis drives, conveyor tension control, web guiding, wire drawing, labeling machines, semiconductor bonders.
Installation Requirements:
Mount on DIN 35 mm rail or use 4× M4 screw mounting holes. Ensure minimum 100 mm vertical clearance above the drive for heat dissipation. Connect motor cable using B&R 4C series cables (e.g., 4C2210.01-510). Connect safety circuits per IEC 61800-5-2 using safety-rated cables (orange sheath). Torque power terminals to 0.8 Nm. Connect 24 V DC control supply to terminals X1 (+) and X2 (−).
Critical Usage Directives:
Perform full auto-tuning (motor identification + current controller tuning) via ACOPOS Configurator before first operation. Verify encoder type matches drive configuration exactly. Configure safety functions per risk assessment (ISO 13849-1) — do not bypass STO for any reason. Do not exceed 12 A continuous current without derating. Ambient temperature above 40°C requires current derating at 2.5% per °C.
